Guiding action for brass musical and other instruments



March 22, 1938. N E|NHORN 2,111,967

GUIDING ACTION FOR BRASS MUSICAL AND OTHER INSTRUMENTS Filed Nov. 16, 1935 8 IINVEINTOR BY 7WM Q /0 ATTORNEY Patented Mar. 22, 1938 UNITED STATES PATENT OFFICE GUIDING ACTION FOR BRASS MUSICAL AND OTHER INSTRUMENTS Nathan Einhorn, Philadelphia, Pa.

Application November 16, 1935, Serial No. 50,072

9 Claims. (01. 84-392) In my prior Patent No. 2,003,995, of June 4, guiding action seen in Figure 9, with the juxta- 1935, I have described and broadly claimed a posed cover removed.

novel guiding action for various valves and slides Figure 13 is a sectional View on an enlarged for musical, brass and other instruments. scale of a novel pivot mounting for an anti-fric In my present invention, I have increased the tion member. efiiciency of the guiding and anti-friction action Figure 14 shows an adjustable pin mounting of reciprocatory or revolving valves and of slides. for an anti-friction member. 1

A further object of the invention is to devise Figure 15 is a section of a rotary valve. novel means for adjusting the anti-friction roll- Figure 16 is a top plan view of another embodiers, which may be metallic or non-metallic mament of valve cap. 10 terial, such as rubber or fiber, Similar numerals indicate corresponding parts.

A further purpose of this invention is to de- Referring to the drawing! vise in conjunction with a slide, guided as herein Referring first to t e embodiment Seen in set forth, a novel construction of tube, slide ure 1, I designates a Valve Casing in which i and amplifier which progressively increases in mounted a reciprocatory tubular valve 2. The 15 cross section towards the amplifier. valve 2 carries a plate 2'. This type of valve With the above, and other objects and purmechanism is especially adapted for use with a poses as will be hereinafter clearly set forth, my Cornet, trumpet Fluegel hOIIL The pp and invention comprehends novel guiding actions and 0f the V Casing iS Closed by a threaded p mountings for moving parts such as valves and 3 having relief Op gs 4 and the lower end Z0 slides for brass, musical and other instruments. of the valve casing is Closed y a threaded t- Other novel features of construction and ad- 0 m r ha a e e p nings hese vantage will hereinafter more clearly appear in Openings may V y desired COIltOuI' and y the detailed description and the appended claims. be curved as shown in Figures 1 and '7 or as For the purpose of illustrating the invention I Shown at l in Figure 16 in which case a central have shown in the accompanying drawing, t pibar 8' forms a bearing for the valve stem 9. cal embodiments of it, which, in practice, will The Valve S 9 as Shown in Figure 1 has its give satisfactory and reliable results. It is, howow e in a d engagement With the ever, to be understood that the various instruvalve and its upper end is internally threaded 3G mentalities of which my invention consists can to receive the threaded shank of the pressure be variously arranged and organized, and my inpiece I8.

vention is not limited to the exact arrangement The valve 2 is provided with the necessary and organization of these instrumentalities as Valve Openings II for steri g With the slides herein set forth for producing various notes when playing a musi- Figure 1 is a sectional elevation of a valve, em- 0341 f- 3r) bodying my invention The anti-friction devices at each end of the e ion of a ortion valve are in the form of rollers l2 free to revolve. f IS an enlarged S ct p These rollers are made of any suitable material 0 3 t Ian iew of F1 ure 2 and may be of metallic or non-metallic material guide 15 Opp V g such as for example fiber, rubber or the iike.

Figure 4 sectlpn on i 44 of Ftgure These rollers !2 are mounted in shoes [3 cylin- Flgure 5 1S on f 55 of Fgure drical in cross section and cut away to receive Figure 6 is a Sectlonal on an enlarged the rollers which are free to revolve on pins N,

Scale of a portion of Figure 1- secured to the forward ends of the shoes. The

Figure is a top P Vlew of the upper cap shoes are adjustable in cylindrical openings I5 45 See in Figure in the valve caps 2| which are slotted at I6 to Figure 3 is a Sectional elevation of another receive screws 11 having flat washers l8 between embodiment of a Valvetheir heads and the valve. A plurality of rollers Figure 9 is a sectional view of a guiding action are employed at each end of the valve and their seen in Figure positions can be readily adjustable so that they 50 u e 10 iS an elevation partly in Section of a will have the proper contact with the inner cylintrombone. drical wall of the valve casing I. A shouldered Figure 11 is a view of one end of the guiding acscrew 19 at the valve bottom has its lower end tion seen in Figure 9 with a. cover removed. tapered to receive a spring 20.

Figure 12 is'a View of the other end of the The upper end'of the valve casing has a lining 55 sleeve 2| having a vertical slot 22 into which extends a roller 23 which rides on the side walls of the slot to prevent relative rotation of the valve and cylinder. The roller 23 is mounted on a bearing pin 24 which passes through a washer 25 and is threaded into a rod 26 through which the valve stem passes and to which it is fixed by a pin 21. Each end of the bar extending from the valve stem is covered by a tubular felt washer 28. The felt Washers are larger than the roller to serve as a cushion on the upward stroke of the valve without creating a suction. The felt washer opposite the roller is retained on its rod by a screw and washer 29, see more particularly Figures 2 and 3.

In Figure 8, I have shown an improved type of valve for different instruments such as a baritone, tuba, cornet, trumpet or alto.

In this embodiment of valve, the rollers 38 are radially adjustable in end members secured in the valve at opposite ends and the valve wall is cut out at 3| to receive the rollers.

The cylinder is provided with a desired number of relief openings 32 to prevent a suction by the movement of the valve.

In Figures 9, 10, 11 and 12, I have shown an improved guiding action for any slide instrument, for example a trombone.

A flanged disc or carrying member 32 is fixed to a slide such as 33 and has end caps 34. The member 32 has slots 35, see Figure 12, to receive screws 36 which engage the roller brackets 31 which are slotted to receive the rollers 38. Each bracket has a screw 39, the tapered head of which is countersunk in the outer periphery of the disc 32 and inwardly of the flange of the disc, it has fixed to it a collar 40, so that the rotation of a screw 39 will move its roller inwardly or outwardly to give it the proper contact with the inner tube 4|. The roller may have pivot trunnions 42 engaging pivot screws 43 as in Figure 13 or the roller may be mounted on a bearing screw 44 as in Figure 14.

The trombone has a. slide 45, see Figure 10, into which the tube 29 telescopes and one leg 46 of the slide terminates at 47 while its other leg 48 telescopes into the tube 49 terminating at 50. The leg 48 is longer than the leg 46 and terminates at 5| telescoping into the tube 52. By this construction, the fixed tubes and the slide progressively increase in cross sectional area from the mouth piece to the bell of the horn.

In Figure 15 I have shown a guiding action for a rotary valve which can be advantageously employed with a French horn, baritone, tuba, cornet, Fluegel horn or trumpet.

The valve casing 53 has end caps 54 secured to it by screws 55. The valve may have pivot trunnions 56 engaging pivot screws 51 in a cap as shown at the left end of Figure 15 or pivot pins 58 threaded into an end cap may engage the walls of a bearing recess 59 in the end of the valve. In such case the end cap preferably has a threaded boss to receive a recessed closure 60. The arm 6| for partially rotating the valve has a rod 62 connected with the valve and passing through a curved recess 63 in its end cap. The rotary valve may be actuated by the conventional cord, if desired, to effect its partial rotation.

The trombone may have the braces 64', 55 66, and the slide preferably has a revoluble grasping sleeve 61 mounted on a rod 68.

The air passing through the trombone is always passing into a larger cross sectional area which produces a better tone. By making one leg of the slide longer than the other, the slide is more easily assembled, and by mounting the guiding actions as shown there is no drag or sag when the slide is moved to seventh position.

The guiding actions on the trombone are arranged in a novel manner. Two of them are on the movable element and two of them are on the stationary element so that friction is eliminated during the entire stroke of the slide.

The legs of the slide at their inner ends are not braced together so that they are free to adjust themselves in telescoping relation with the tubes, and by having the handle rotatably carried by only one leg of the slide a free sliding action is obtained.

In the valve seen in Figure 8, the valve casing is slotted, as at 69 to receive a roller I0 carried by the valve and engaging the side walls of the groove to prevent relative rotation of the valve and its casing.

The valve in Figure 1 has a floating action, as the conventional suction producing cushion on the valve stem is eliminated and air can pass freely through the valve and from the ends of the casing to the atmosphere.

The standard clearance in valves and slides has been a few thousandths of an inch. In accordance with this invention, this clearance can be materially reduced and the adjustable rollers will hold the movable and stationary elements out of contact with substantially less than standard clearance, so that there is a free and unrestricted movement of the valves or slides.

It will be apparent that as the parts we rollers can be adjusted to give the same 1'51 less condition between the relatively movable parts as they had originally, thus producing an action which Will be efiicient for a longer period of years.

The action is much easier to work. No lubrication is necessary. One can play with more life and velocity, finer phrasing and cleaner technique.

It will now be apparent that I have devised a new and useful guiding action for valves and slides of brass musical and other instruments which embodies the features of advantage enumerated as desirable in the statement of the invention and the above description, and while I have, in the present instance, shown and described preferred embodiments thereof which will give in practice satisfactory and reliable results, it is to be understood that these embodiments are susceptible of modification in various particulars without departing from the spirit or scope of the invention or sacrificing any of its advantages.

Having thus described my invention, what I claim as new and desire to secure by Letters Patent is:-

1. In a guiding action for brass musical instruments, a valve casing having a longitudinally extending slot, a reciprocatory valve in said casing, and a roller carried by said valve and free to revolve in said slot with its periphery engaging opposite walls of said slot to prevent relative rotation of the valve and easing.

2. In a guiding action for brass musical instruments, a valve casing, a valve in the casing having a stem, means to prevent relative rotation of the valve and casing, a member carried by and extending transversely of said stern, and tubular cushioning elements on said member.

3. In a guiding action for brass musical instru- 75 ments, a valve casing, a reciprocatory valve in the casing, guides at an end of said valve, shoes in said guides, rollers free to revolve in said shoes, and means to adjust said shoes to provide surface engagement of the rollers with the casing and to hold adjacent surfaces of said valve out of contact with said casing.

4. In a guiding action for brass musical instruments, a valve casing, a reciprocatory valve in the casing, guides at each end of said valve, shoes in said guides, rollers free to revolve in said shoes, and means to adjust said shoes to provide surface engagement of the rollers with the casing and to hold adjacent surfaces of said valve out of contact with said casing.

5. In a guiding action for brass musical instruments, a valve casing, a reciprocatory valve in the casing, guides at an end of said valve, shoes in said guides, rollers free to revolve in said shoes, means to adjust said shoes to provide surface engagement of the rollers with the casing and to hold adjacent surfaces of said valve out of contact with said casing, and means to lock said shoes in their adjusted position.

6. A guiding action for valves of brass musical instruments, comprising a valve casing, a reciprocatory valve in said casing, guides carried by said valve, shoes adjustable in said guides, pivot bearings carried by said shoes, and rollers free to revolve in said pivot bearings, and having only surface engagement with the walls of the valve casing to hold adjacent surfaces of said valve and casing out of contact.

7. In a guiding action for slides of brass musical instruments, a movable and a stationary element in telescopic relationship, a mounting on one of said elements, roller brackets adjustable on said mounting, means to fix the brackets in adjusted position, and rollers mounted in said brackets to have surface contact with the adjacent wall of the other element only to thereby hold adjacent walls of said elements out of contact.

8. In a brass musical instrument, stationary and movable elements in telescopic relationship, and two guiding actions on each element, each of said actions including rollers adjustably carried by one element and having only surface engagement with the other element.

9. In a guiding action for brass musical instruments, a valve casing, a reciprocatory valve in the casing, guides at one end of said valve, shoes in said guides, rollers free to revolve in said shoes, means to adjust said shoes to provide only surface engagement of the rollers with the casing, a headed fastening device at one end of the valve and a spring carried by the head of said fastening device to be disposed in the plane of axial movement of the valve.

NATHAN EINHORN. 

